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A Brazilian banking trojan called Ousaban is going after Windows users who bank in Spain and Portugal. Fortinet's FortiGuard Labs identified the campaign in May 2026
FortiGuard says the Brazilian banking trojan Ousaban is targeting Spain and Portugal via phishing
The infostealer specifically targets Brazilian Portuguese speakers and combines malware designed to phish banking credentials and steal data, a worm, and some uniquely Brazilian quirks.
A previously undocumented malware called SambaSpy is exclusively targeting users in Italy via a phishing campaign orchestrated by a suspected Brazilian Portuguese-speaking threat actor
The threat actor known as TA558 has been attributed to a new massive phishing campaign that targets a wide range of sectors in Latin America with the goal of deploying Venom RAT
WormGPT, a private new chatbot service advertised as a way to use Artificial Intelligence (AI) to help write malicious software without all the pesky prohibitions on such activity enforced by ChatGPT and Google Bard, has started adding restrictions on how the service can be used. Faced with customers trying to use WormGPT to create ransomware and phishing scams, the 23-year-old Portuguese programmer who created the project now says his service is slowly morphing into “a more controlled environment.” The large language models (LLMs) made by ChatGPT parent OpenAI or Google or Microsoft all have various safety measures designed to prevent people from abusing them for nefarious purposes — such as creating malware or hate speech. In contrast, WormGPT has promoted itself as a new LLM that was created specifically for cybercrime activities.